Queens Gambit Declined Other Variations Discovered Attack in Chess

In queens gambit declined other variations discovered attack positions, the key idea is that a piece moves away to reveal an attack from a rook, bishop, or queen on the same line. In the Queen's Gambit Declined, this often appears after the center is locked and one side has pieces lined up behind pawns, so a single move can uncover a threat on the king, queen, or an undefended piece.